/*- * Copyright (c) 2004 Networks Associates Technology, Inc. * Copyright (c) 2005 SPARTA, Inc. * All rights reserved. * * This software was developed for the FreeBSD Project in part by Network * Associates Laboratories, the Security Research Division of Network * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), * as part of the DARPA CHATS research program. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <kern/zalloc.h> #include <security/_label.h> #include <sys/param.h> #include <sys/queue.h> #include <sys/systm.h> #include <security/mac_internal.h> static ZONE_DECLARE(zone_label, "MAC Labels", sizeof(struct label), ZC_ZFREE_CLEARMEM); struct label * mac_labelzone_alloc(int flags) { int zflags = Z_ZERO | (flags & MAC_NOWAIT); struct label *l; static_assert(MAC_NOWAIT == Z_NOWAIT); l = zalloc_flags(zone_label, zflags); if (l) { l->l_flags = MAC_FLAG_INITIALIZED; } return l; } void mac_labelzone_free(struct label *l) { if (l == NULL) { panic("Free of NULL MAC label\n"); } if ((l->l_flags & MAC_FLAG_INITIALIZED) == 0) { panic("Free of uninitialized label\n"); } bzero(l, sizeof(struct label)); zfree(zone_label, l); } /* * Functions used by policy modules to get and set label values. */ intptr_t mac_label_get(struct label *l, int slot) { KASSERT(l != NULL, ("mac_label_get: NULL label")); return (intptr_t) (l->l_perpolicy[slot].l_ptr); } void mac_label_set(struct label *l, int slot, intptr_t v) { KASSERT(l != NULL, ("mac_label_set: NULL label")); l->l_perpolicy[slot].l_ptr = (void *) v; }